Hi,
I would try to get a desoldering iron in order to get the Sid out without a damage. You can then test them in a C64 with a socket for the Sid. Also there is th NAFTA (north america free trade asgreement) in place. Check out if there is any import Vat (GST, HST, QST, PST, FNT... hehe) or duty on electronic parts.
Cheers
orange